Adjustable ring book



Jan. 8, 1929. 1,698,463

H. T. ADAMS v Filed Jan. 29, 1927 ,Patented Jan. 8, 1929i.

unirse sra T P AT NT HENRY T. ADMS; 0F CHICAGO, ILLINOIS.

ADJUSTABLE RING BooK.

'Application ledfilanuary 29,1927. .S'eral'Nm 164,524.

The invention is fully described in the following specification and shown inthe accompanying drawings, in which:

Figure 1 is a front elevation of the back 10 strip showing two of the rings in place therein;

Fig. 2 is a partial enlarged end elevation of the same in a book; Fig. 3 is a side elevation of the hinge end l5 of a ring; and

Fig. 4 is a similar view of the other end of the ring.

rlhe embodiment illustrated comprises a metal back strip A adapted to receive a num- 20 ber of detachable rings B. The back strip has a longitudinal rib formed on eachside of a flat central portion 11. Each rib continues as an inwardly turned edge which is substantially C-shaped in cross-section, there'- by providing a longitudinal channel 12 open along an inner edge 13.`

The flat portion 11 lies in substantially the same plane as the bottoms of the channels 12. Fig. 2 shows a partial end View of a book 3 in which the strip A is secured to a filler strip C and a flexible cover D by means of two or more rivets E.

The ring is U-shaped in side elevation as shown in Fig. 2 and is made from a strip of metal of uniform width throughout. One end is formed into a transverse roll 14 which is adapted to slide into either of the channels 12so that the ring B may be rocked about the center or" this roll as an axis.

The central portion 15 of the ring B is made U-shaped in transverse section so as to conform on the inner side to the shape of the holes in the sheets of paper (not shown) through which the rings are placed in a wellknown manner. The outer end of the ring B is curved outwardly at 16 and the center of this end is forced outwardly at 17 so as to just pass through the opening 13'and to engage the inturned edge. In order to snap the ring in place, it is necessary for the opersiredposit-ion and are rocked over into engagement with the opposite rolled edge. A

`While only two rings are here shown, any desired'V number and spacing arrangement may be used; V l

vWhere the metalused inthe rings is very heavy, the outer end of each ring mustV be A forced to one side, i. le. longitudinally volt'h'e back strip AL until' it passes into the longitudinal channel 12, after which it is released. y

Thus, it will be seen, a very efficient, convenient and substantial ring book is provided and one which can be manufactured economically. The use of the ribs adds very greatly to the strength and stiffness of the whole 'or a given weight of metal and the location or" a rib adjacent one'oif the curved outer edges provides an opening 13 which is placed at a particularlyy advantageous position for the insertion and operation of the ring member B.

While l have shown and described but a single embodiment of this invention, it is to be understood that it is capable of many modications. Changes therefore in the construction and arrangement may be made which do not depart from the spirit and scope of the invention as disclosed in the appended claims.

I claim:

1. In a ring book, a metal back strip having inturned edges and an integral longitudinal rib along one side forming a longitudinal channel, and a U-shaped ring-member adapted to slide into said longitudinal channel and to be rotatably secured therein, the other end of said ring-member being adapted to swing into interlocking relation with the other edge. Y

2. In a ring book, a metal back strip having inturned edges and an integral longitudinal rib along one side iorming a longitudinal channel, and a U-shaped ring-member having one end rolled and adopted to slide into said longitudinal channel and to be rotatably secured therein, the other end of said ring-l member being adapted to swing into interlocking relation with the other edge. v Y

3. In a ring book, a metal back strip having inturned edges and a longitudinal rib along each side, the side or' each rib and the inturned edge forming a longitundinal groove of C-shaped cross-section, and a U-shaped ring-member adapted to hingedly interlock with one of said edgesand its adjacent rib,

the other end of said ring-member being adapted to interlock with the other edge.

4. In a ring book, a'metal back strip having inturned edges and a longitudinal rib alone; each side, the side of each rib and the inturned edge forming a longitundinal groove `being adapted to interlock With the other edge.

5. In a ring book, a metal back strip having inturned edges and an integral longitudinal rib alongvone side, and a U-shaped ringmember formed from a strip of metal of uniformvvidth throughout, one end of the strip being rounded to rotatably fit in one of said inturned edges and its adjacent rib.

6. In a ring book, a metal back strip having inturned edges and an integral longitundinal rib along one side, and a U-shaped ring-meinber formed froma'strp of metal of uniform Width throughout, one end of the strip 'being rounded to 'rotatably lit in one of said inturned edges, and its adjacent rib, the center of said strip being substantially semi-circular, the center of the other end being struck Y up so as to form a Catch to engage the other other edge of theback strip.

HENRY 'I. ADAMS. 

